A 44-year-old man will serve nearly three years in prison for making a series of threats against Rep. Tulsi Gabbard, including threatening to decapitate the Hawaii Democrat.

The FBI and Capitol Police began investigating Aniruddha Sherbow, whose last known address was in Poughkeepsie, N.Y., after an email he sent to the FBI and several medial outlets threats last August, vowing to find Gabbard and "sever her head from her body."

According to prosecutors, Sherbow had been harassing the congresswoman since February 2011 before he was arrested in Tijuana, Mexico, on Aug. 28, 2013, pursuant to an arrest warrant issued in the District of Columbia. Sherbow entered a plea of no contest in federal court for two charges related to the threats. He was sentenced Monday to 33 months in prison.